./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dc77dba7d0a42d28a45b5d35d96b429d0886353a9713255eb9fc5a14ecd01454 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 02:54:21,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 02:54:21,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 02:54:21,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 02:54:21,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 02:54:21,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 02:54:21,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 02:54:21,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 02:54:21,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 02:54:21,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 02:54:21,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 02:54:21,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 02:54:21,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 02:54:21,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 02:54:21,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 02:54:21,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 02:54:21,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 02:54:21,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 02:54:21,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 02:54:21,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 02:54:21,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 02:54:21,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 02:54:21,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 02:54:21,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 02:54:21,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 02:54:21,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 02:54:21,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 02:54:21,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 02:54:21,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 02:54:21,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 02:54:21,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 02:54:21,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 02:54:21,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 02:54:21,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 02:54:21,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 02:54:21,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 02:54:21,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 02:54:21,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 02:54:21,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 02:54:21,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 02:54:21,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 02:54:21,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 02:54:21,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 02:54:21,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 02:54:21,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 02:54:21,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 02:54:21,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 02:54:21,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 02:54:21,091 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 02:54:21,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 02:54:21,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 02:54:21,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 02:54:21,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 02:54:21,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 02:54:21,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 02:54:21,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 02:54:21,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 02:54:21,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 02:54:21,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 02:54:21,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 02:54:21,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 02:54:21,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:54:21,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 02:54:21,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 02:54:21,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 02:54:21,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 02:54:21,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 02:54:21,096 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 02:54:21,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 02:54:21,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 02:54:21,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 02:54:21,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc77dba7d0a42d28a45b5d35d96b429d0886353a9713255eb9fc5a14ecd01454 [2021-11-03 02:54:21,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 02:54:21,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 02:54:21,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 02:54:21,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 02:54:21,325 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 02:54:21,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-03 02:54:21,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d445fa83/b6fcc38a1c4540728b7e2f1a7f38e4c8/FLAGe7b1c3f1f [2021-11-03 02:54:22,279 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 02:54:22,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-03 02:54:22,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d445fa83/b6fcc38a1c4540728b7e2f1a7f38e4c8/FLAGe7b1c3f1f [2021-11-03 02:54:22,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d445fa83/b6fcc38a1c4540728b7e2f1a7f38e4c8 [2021-11-03 02:54:22,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 02:54:22,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 02:54:22,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 02:54:22,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 02:54:22,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 02:54:22,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:54:22" (1/1) ... [2021-11-03 02:54:22,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24904a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:22, skipping insertion in model container [2021-11-03 02:54:22,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:54:22" (1/1) ... [2021-11-03 02:54:22,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 02:54:22,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 02:54:31,297 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[886222,886235] [2021-11-03 02:54:31,299 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[886391,886404] [2021-11-03 02:54:31,299 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[886558,886571] [2021-11-03 02:54:31,300 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[886726,886739] [2021-11-03 02:54:31,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:54:31,440 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 02:54:31,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[886222,886235] [2021-11-03 02:54:31,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[886391,886404] [2021-11-03 02:54:31,863 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[886558,886571] [2021-11-03 02:54:31,863 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[886726,886739] [2021-11-03 02:54:31,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:54:32,713 INFO L208 MainTranslator]: Completed translation [2021-11-03 02:54:32,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32 WrapperNode [2021-11-03 02:54:32,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 02:54:32,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 02:54:32,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 02:54:32,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 02:54:32,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:32,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:34,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 02:54:34,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 02:54:34,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 02:54:34,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 02:54:34,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:34,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:34,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:34,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:35,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:36,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:36,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:36,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 02:54:36,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 02:54:36,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 02:54:36,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 02:54:36,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (1/1) ... [2021-11-03 02:54:36,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:54:36,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 02:54:36,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 02:54:36,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 02:54:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-03 02:54:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-03 02:54:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-03 02:54:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-03 02:54:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-03 02:54:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-03 02:54:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-03 02:54:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-03 02:54:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 02:54:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 02:54:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-03 02:54:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-03 02:54:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 02:54:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 02:54:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-03 02:54:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-03 02:54:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-03 02:54:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-03 02:54:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 02:54:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 02:54:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 02:54:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-03 02:54:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-03 02:54:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-03 02:54:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-03 02:54:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-03 02:54:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-03 02:54:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-03 02:54:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 02:54:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-03 02:54:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-03 02:54:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 02:54:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-03 02:54:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-03 02:54:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-03 02:54:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-03 02:54:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-03 02:54:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-03 02:54:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 02:54:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-03 02:54:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-03 02:54:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-03 02:54:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-03 02:54:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-03 02:54:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-03 02:54:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-03 02:54:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-03 02:54:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-03 02:54:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-03 02:54:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 02:54:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-03 02:54:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-03 02:54:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 02:54:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 02:54:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-03 02:54:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-03 02:54:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-03 02:54:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-03 02:54:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-03 02:54:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-03 02:54:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-03 02:54:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-03 02:54:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-03 02:54:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-03 02:54:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-03 02:54:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-03 02:54:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-03 02:54:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-03 02:54:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-03 02:54:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-03 02:54:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-03 02:54:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-03 02:54:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-03 02:54:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-03 02:54:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 02:54:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 02:54:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-03 02:54:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-03 02:54:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-03 02:54:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-03 02:54:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-03 02:54:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-03 02:54:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-03 02:54:36,929 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-03 02:54:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-03 02:54:36,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-03 02:54:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 02:54:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-03 02:54:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-03 02:54:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-03 02:54:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-03 02:55:53,544 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break: ldv_switch_6_#res := 0; [2021-11-03 02:55:53,544 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 02:55:53,545 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-03 02:55:53,545 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-03 02:55:53,545 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 02:55:53,545 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#4: ldv_switch_6_#res := 0; [2021-11-03 02:55:53,545 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#3: ldv_switch_6_#res := 0; [2021-11-03 02:55:53,545 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#2: ldv_switch_6_#res := 0; [2021-11-03 02:55:53,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break#2: ldv_switch_5_#res := 0; [2021-11-03 02:55:53,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-03 02:55:53,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#3: ldv_switch_4_#res := 0; [2021-11-03 02:55:53,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break: ldv_switch_5_#res := 0; [2021-11-03 02:55:53,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break#2: ldv_switch_8_#res := 0; [2021-11-03 02:55:53,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-03 02:55:53,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-03 02:55:53,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 02:55:53,547 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-03 02:55:53,547 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 02:55:53,547 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-03 02:55:53,547 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_7_switch_break: ldv_switch_7_#res := 0; [2021-11-03 02:55:53,548 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-03 02:55:53,548 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_9_switch_break: ldv_switch_9_#res := 0; [2021-11-03 02:55:53,548 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break: ldv_switch_8_#res := 0; [2021-11-03 02:55:53,549 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-03 02:55:53,549 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 02:55:53,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 02:55:53,608 INFO L299 CfgBuilder]: Removed 11171 assume(true) statements. [2021-11-03 02:55:53,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:55:53 BoogieIcfgContainer [2021-11-03 02:55:53,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 02:55:53,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 02:55:53,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 02:55:53,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 02:55:53,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:54:22" (1/3) ... [2021-11-03 02:55:53,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d9f202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:55:53, skipping insertion in model container [2021-11-03 02:55:53,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:32" (2/3) ... [2021-11-03 02:55:53,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d9f202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:55:53, skipping insertion in model container [2021-11-03 02:55:53,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:55:53" (3/3) ... [2021-11-03 02:55:53,627 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-03 02:55:53,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 02:55:53,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 119 error locations. [2021-11-03 02:55:53,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 02:55:53,690 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 02:55:53,690 INFO L340 AbstractCegarLoop]: Starting to check reachability of 119 error locations. [2021-11-03 02:55:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 11633 states, 11343 states have (on average 1.3931058802785858) internal successors, (15802), 11470 states have internal predecessors, (15802), 134 states have call successors, (134), 37 states have call predecessors, (134), 37 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) [2021-11-03 02:55:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-03 02:55:53,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:55:53,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:55:53,812 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_resumeErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_resumeErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 116 more)] === [2021-11-03 02:55:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:55:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash 27599455, now seen corresponding path program 1 times [2021-11-03 02:55:53,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:55:53,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696353255] [2021-11-03 02:55:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:55:53,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:55:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:55:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:55:55,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:55:55,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696353255] [2021-11-03 02:55:55,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696353255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:55:55,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:55:55,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:55:55,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586522909] [2021-11-03 02:55:55,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:55:55,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:55:55,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:55:55,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:55:55,461 INFO L87 Difference]: Start difference. First operand has 11633 states, 11343 states have (on average 1.3931058802785858) internal successors, (15802), 11470 states have internal predecessors, (15802), 134 states have call successors, (134), 37 states have call predecessors, (134), 37 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 02:55:57,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:58:09,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-03 02:59:09,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:59:31,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:59:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:59:53,909 INFO L93 Difference]: Finished difference Result 32921 states and 45912 transitions. [2021-11-03 02:59:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:59:53,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2021-11-03 02:59:53,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:59:54,024 INFO L225 Difference]: With dead ends: 32921 [2021-11-03 02:59:54,025 INFO L226 Difference]: Without dead ends: 21362 [2021-11-03 02:59:54,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:59:54,148 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 14491 mSDsluCounter, 15804 mSDsCounter, 0 mSdLazyCounter, 30289 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 222487.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14494 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 30310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 289.38ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 30289 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234963.98ms IncrementalHoareTripleChecker+Time [2021-11-03 02:59:54,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14494 Valid, 1579 Invalid, 30310 Unknown, 0 Unchecked, 289.38ms Time], IncrementalHoareTripleChecker [17 Valid, 30289 Invalid, 4 Unknown, 0 Unchecked, 234963.98ms Time] [2021-11-03 02:59:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21362 states. [2021-11-03 02:59:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21362 to 21210. [2021-11-03 02:59:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21210 states, 20749 states have (on average 1.362427104920719) internal successors, (28269), 20886 states have internal predecessors, (28269), 268 states have call successors, (268), 74 states have call predecessors, (268), 74 states have return successors, (271), 263 states have call predecessors, (271), 268 states have call successors, (271) [2021-11-03 02:59:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21210 states to 21210 states and 28808 transitions. [2021-11-03 02:59:54,768 INFO L78 Accepts]: Start accepts. Automaton has 21210 states and 28808 transitions. Word has length 254 [2021-11-03 02:59:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:59:54,771 INFO L470 AbstractCegarLoop]: Abstraction has 21210 states and 28808 transitions. [2021-11-03 02:59:54,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 02:59:54,772 INFO L276 IsEmpty]: Start isEmpty. Operand 21210 states and 28808 transitions. [2021-11-03 02:59:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-03 02:59:54,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:59:54,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:59:54,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 02:59:54,779 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_resumeErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_resumeErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 116 more)] === [2021-11-03 02:59:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:59:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash 813214735, now seen corresponding path program 1 times [2021-11-03 02:59:54,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:59:54,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614791210] [2021-11-03 02:59:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:59:54,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:59:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:59:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:59:55,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:59:55,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614791210] [2021-11-03 02:59:55,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614791210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:59:55,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:59:55,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:59:55,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536251184] [2021-11-03 02:59:55,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:59:55,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:59:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:59:55,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:59:55,964 INFO L87 Difference]: Start difference. First operand 21210 states and 28808 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 02:59:58,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:01:56,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-03 03:03:04,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:03:46,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:03:49,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:04:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:04:13,278 INFO L93 Difference]: Finished difference Result 51654 states and 70410 transitions. [2021-11-03 03:04:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:04:13,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2021-11-03 03:04:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:04:13,370 INFO L225 Difference]: With dead ends: 51654 [2021-11-03 03:04:13,370 INFO L226 Difference]: Without dead ends: 31088 [2021-11-03 03:04:13,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:04:13,423 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 13848 mSDsluCounter, 14908 mSDsCounter, 0 mSdLazyCounter, 29401 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 240259.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13850 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 29418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 205.29ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29401 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254622.67ms IncrementalHoareTripleChecker+Time [2021-11-03 03:04:13,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13850 Valid, 670 Invalid, 29418 Unknown, 0 Unchecked, 205.29ms Time], IncrementalHoareTripleChecker [13 Valid, 29401 Invalid, 4 Unknown, 0 Unchecked, 254622.67ms Time] [2021-11-03 03:04:13,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31088 states. [2021-11-03 03:04:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31088 to 30737. [2021-11-03 03:04:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30737 states, 30105 states have (on average 1.368576648397276) internal successors, (41201), 30251 states have internal predecessors, (41201), 402 states have call successors, (402), 111 states have call predecessors, (402), 111 states have return successors, (407), 395 states have call predecessors, (407), 402 states have call successors, (407) [2021-11-03 03:04:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30737 states to 30737 states and 42010 transitions. [2021-11-03 03:04:14,024 INFO L78 Accepts]: Start accepts. Automaton has 30737 states and 42010 transitions. Word has length 262 [2021-11-03 03:04:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:04:14,026 INFO L470 AbstractCegarLoop]: Abstraction has 30737 states and 42010 transitions. [2021-11-03 03:04:14,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:04:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 30737 states and 42010 transitions. [2021-11-03 03:04:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-03 03:04:14,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:04:14,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:04:14,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:04:14,030 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_resumeErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_resumeErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 116 more)] === [2021-11-03 03:04:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:04:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash 691131084, now seen corresponding path program 1 times [2021-11-03 03:04:14,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:04:14,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550119613] [2021-11-03 03:04:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:04:14,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:04:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:04:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:04:14,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:04:14,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550119613] [2021-11-03 03:04:14,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550119613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:04:14,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:04:14,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:04:14,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588982897] [2021-11-03 03:04:14,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:04:14,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:04:14,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:04:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:04:14,904 INFO L87 Difference]: Start difference. First operand 30737 states and 42010 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:04:17,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:06:21,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:07:29,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:08:15,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:08:17,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15